A pyrethroid is an organic compound similar to the natural pyrethrins produced by the flowers of pyrethrums (Chrysanthemum cinerariaefolium and C. coccineum).
pyrethroidとは意味:{名} : ピレスロイド pyrethroid meaning: (or ( esp US) /-rethˈ/) noun Any of various synthetic compounds related to the pyrethrins, and sharing their insecticidal propertiespyrethroid перевод:Пиретроиды